Nibco B350300 Cast Copper Bulkhead Fitting 1/2 in

Product Description

The NIBCO B350300 is a cast copper bulkhead fitting designed to create a pressure-tight pass-through connection at a tank wall, panel, or enclosure. At 1/2 inch in size with sweat-style C x C end connections, it allows copper tubing to pass through a barrier while maintaining a sealed, pressure-rated joint on both sides. Weighing 0.48 pounds, the fitting is machined from cast copper and conforms to ASTM B584 and ISO standards. It is installed by licensed plumbers and HVAC technicians wherever a watertight bulkhead penetration is required in copper piping systems.

This fitting is suited for residential and light commercial plumbing, HVAC, and hydronic applications where a 1/2 inch copper line must penetrate a tank shell, reservoir wall, or equipment panel. The C x C configuration accepts standard copper tubing on both ends, making it compatible with conventional sweat-soldering workflow. It is commonly used in water heater connections, expansion tank installations, and custom fabricated equipment panels that require a pressure-rated through-fitting.

Key Features

• Cast copper construction meets ASTM B584 and ISO standards for pressure service
• 1/2 inch fitting size with C x C (sweat) end connections on both sides
• Bulkhead design allows sealed copper tubing penetration through tank walls or panels
• Pressure fitting style rated for standard service pressure requirements in copper systems
• Compact, single-piece cast body for consistent wall thickness and joint integrity

Compatibility

Designed as an OEM-style replacement or new-installation bulkhead fitting for 1/2 inch copper tube systems using sweat (C x C) connections in pressure plumbing and HVAC applications.

Installation Notes

Installation should be performed by a licensed plumber or HVAC technician following applicable IPC and local plumbing codes. Shut off and drain the system before cutting into any live line or modifying a tank wall penetration. Use standard sweat-soldering tools and lead-free solder compliant with potable water requirements where applicable. Ensure the bulkhead nut is tightened to the tank wall before making final solder joints to avoid heat transfer damage to sealing surfaces.